1) The Speed of light is maximum in a) Glass b) Vaccum c) Diamond 2) We can create enlarged,virtual images with a) Concave mirror b) Convex mirror c) Plane mirror 3) The radius of curvature of a concave mirror whose focal length is 5cm is a) 9cm b) 6cm c) 10cm 4) The reason for brilliance of diamonds is total internal reflection of light a) True b) False 5) A ray of light passes from one medium to another medium.refraction takes place when angle of incidence is a) 90* b) 45* c) 0* 6) When large mirrors are used to concentrate sunlight to produce heat in solar furnaces a) Concave b) Convex 7) The angle of deviation depends on the retraction index the glass a) True b) False 8) When a beam of white light passes through a prism it gets a) Only deviated b) Reflected c) Deviated and dispersed 9) If a ray of light passes obliquely from one medium to another,it does not suffer any deviation a) True b) False

physics :light

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